TB-303 pots!

[Trevor Page]

Hi,

You won't find any pots anywhere that are a good match to the original 303
pots. When most of the pots in my TB303 died, I had no choice but to fit a
second little board inside the case which had panel-mount pots mounted to
it. This modification works very well. It would have been much better to
have altered the original design so that you could have easily fitted some
standard pots!

How about fitting a small aluminium panel underneath the case, drilling six
holes into this and mounting some standard Alps panel-mount pots to this?
The added advantage of this is that (a) the pots can be easily replaced and
(b) more importantly, downward pressure on the knobs will not pressure (and
possibly damage) the PCB.

Rotary switches can be obtained from Roland. I had to replace one of these
in
my 303.

Regards

Trev



=========

Trevor Page BEng (Hons)
----- Original Message -----
From: *Star Project <ampe at swipnet.se>
To: DIY skicka Lista <synth-diy at node12b53.a2000.nl>
Sent: Wednesday, October 18, 2000 6:00 PM
Subject: TB-303 pots!


> Hi!
>
> I am know finnished with my PCB for the 303. It is
> almost an exact copy of the original one with just a few
> small modification. And I have also forced my friend to
> make me a aluminium case in school which is an exact copy
> of the original case. So there for a proble has surfaced.
> The pots! I need pots that fits on the old PCB and fits the
> original case aswell. So if you know any pot at all that
> resembles the old Alp pot used in the 303 please mail me.
> If you find a rotary switch aswell please let me know. The
> standard one that can eb found on for example Elfa or Reichelt
> doesnt fit perfectly but can be used as a last alternative.
>
> / Andreas
>
>